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Çѱ¹¼öÀÚ¿øÇÐȸ / v.27, no.2, 1994³â, pp.121-128
´Ü¶ôºÎ¿¡¼­ÀÇ È帧 Ư¼º ¹× ¿ª·ù¿¡ ÀÇÇÑ ³«Çϸ®¿µ¿ª¿¡¼­ÀÇ ºÎ·ù»ç À¯µ¿¿¡ °üÇÑ ¿¬±¸
( Experimental study of flow characteristics and sediment behaviors at the step down )
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´Ü¶ôºÎ¿¡¼­ÀÇ ¸ðÇü½ÇÇèÀ» ÅëÇÏ¿© Ç¥¸é À¯¼ÓÀÇ °¨¼Ò°æÇâ, ³«Çϸ®¿µ¿ªÀÇ ±æÀÌ, ÀáÀçÇÙ(potential core)ÀÇ ±æÀÌ µîÀ» °íÂûÇÏ¿© ´Ü±¸ Àü¸é¿¡ ´ëÇÑ È帧À» ±Ô¸íÇÏ¿´´Ù. È帧¼Ó¿¡ ºÎ·ù»ç°¡ È¥ÀçµÇ¾î ÀÖ´Â °æ¿ì, ºÎÀ¯»ç°¡ ³«Çϸ®¿µ¿ª Áß¿¡ ÅðÀûÇÏ°Ô µÇ¾î ´Ü±¸ÀÇ ÁøÇà ¼Óµµ¿¡ ¿µÇâÀ» ÁְԵǹǷΠÀ̸¦ ±Ô¸íÇϱâ À§ÇÏ¿© ´Ü¶ôºÎ¿¡ À־ ºÎ·ù»çÀÇ À¯ÀÔ¿¡ ´ëÇÑ ½ÇÇèÀ» ½Ç½ÃÇϰí, ÀÌ¿¡ ´ëÇÑ ½ÄÀ» À¯µµÇÏ¿© ½ÇÇè °á°ú·ÎºÎÅÍ ÀÌµé ½ÄÀÇ À¯È¿¼ºÀ» Áõ¸íÇÏ¿´´Ù. ¶ÇÇÑ ´Ü¶ôºÎÀÇ ³«Çϸ®¿µ¿ª¿¡¼­ »çÀÌÆù¿¡ ÀÇÇÏ¿© äÃëµÇ´Â ºÎ·ù»ç·®¿¡ ´ëÇÑ ½ÇÇè °á°ú,$q_{s0}$ ¸¦ ±ÔÁ¤ÇÏ´Â ÆÄ¶ó¸ÞŸ¿¡ °üÇÑ °ËÅ並 ½Ç½ÃÇÏ¿© ºÎ·ù»çÀÇ ÅðÀû Ư¼ºÀ» ¼³¸íÇÏ¿´´Ù.
Reduced trend of surface velocity, length of the separated drop area and width of potential core have been verified through experimental study of flow characteristics at the step down. To inverstigate sediment behaviors, experimental study which involved accumulated sediment transport reducing water velocity in the separated drop area was performed. From the experimental results, surface velocity, length of the separated drop area and width of potential core were formulated, and calculated output was corroborated by experimental outcome. Furthermore an examination of the parameter which is defined by $q_{sf}$/$q_{uo}$ was performed by detecting sediment in the separated drop area. Therefore these experiments can express the phenomena of flow characteristics and sediment behaviors at the step down.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.27, no.2, 1994³â, pp.121-128
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920094935)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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